Cylinder construction



Sept. 28, 1943. A.v H. HABERSTUMP 2,330,421

CYLINDER CONSTRUCTION Filed Feb. 27, 1941 ,4, lNvENToR Patented Sept. 428, 1943 CYLINDER CONSTRUCTION Alfred H. Haberstump, Detroit, Mich., assignor to The Murray Corporation of America, Detroit, Mich., a corporation of Delaware Application February 27, 1941, Serial No. 380,876

2 Claims.

lMy invention relates to containers, and particularly to a container made from a pair of elements which are welded together to form a rotor for a washing machine.

The container or rotor embodies a pair of like stampings having inwardly projecting ribs stamped in the metal, with one portion of pot shape and with the other portion having the bottom thereof cutaway with the edges rolled to define an opening. At the mouth of each element an outwardly directed flange is provided which is mated and Welded to form a 'unit construction.

Accordingly, the main objects of my invention are: to form a rotor for a washing machine from a pair of like stampings, the end of one of which is cut away to form an opening; to provide a method of forming a rotor for .a washing machine which embodies the formation of like stampings having wall portions inwardly deiiected to form ribs and welding the elements at their open ends into a unit construction; and,

l in general,to provide a rotor for a washing machine which is simple in construction and economical of manufacture.

Other objects and features of novelty of my invention will be either speciiically pointed out or will become apparent when referring, for a better understanding of my invention, to the following description taken in conjunction with the accompanying drawing, wherein:

Figure 1 is a view in elevation of a stamping, a pair of which forms the rotor embodying features of my invention;

Fig. 2 is a view of a pair of the elements illustrated in Fig. 1 when mated together to form a rotor before being welded;

Fig. 3 is a broken view in side elevation of the rotor illustrated in Fig. 2, mounted in a device which rotates the rotor and performs a Welding operation thereon; and

Fig. 4 is a broken end view of the structure illustrated in Fig. 3, with. parts in section.

In Figure 1, I have illustrated a stamping having a base portion II, conically disposed side portions I2, and an end iiange I3. 'I'he side wall portions are deflected inwardly at I4 forming ribs within the receptacle which produces the tumbling of the clothes being washed when the rotor is rotated. The ange I3 on the end of the stamping follows the arcuate contour of the portions I2 and also the angular deflected portion |4 at the mouth of the stampings.

In Fig. 2, I have illustrated the right hand stamping I|| as having its base inwardly deected at I5 and an opening I 6 provided in the base of the left hand stamping I0 with the margina] edge rolled back upon itself to provide strength and form a smooth opening. 'Ihe anges I3 are disposed in abutting-relation and may be spot welded at several spaced points to maintain the the elements together in exact aligned Referring more particularly to Figs. 3 and 4, I have illustrated a device I8 for supporting and driving the rotor during the welding operation. A pair of arbors I9 and 2| are mounted on dove tailed blocks 22 and 23, respectively, which are locked together by a bar 24. The dove tail portion of the blocks 22 and 23 mate with the dove tail slot within the standard 26. The arbors I9 and 2|, being connected by the bar 24, are moved simultaneously relative to the rotor. A bracket 2l is supported on the standard 26 and forms a support for a pair of shafts 28 and 29 on which a pair of conical rollers 3| are mounted. The

shaft 2S supports a sprocket 32 which is connected by a chain 33 to a gear reduction unit 34 which is driven by a motor 35. A pair of conical bands 36 are disposed over the wall portion I2 of the elements of the rotor having projecting portions 31 disposed within the deected wall portions I4 to prevent relative movement between the bands and elements.

The arbor I9 has an extending arm 38 provided with an angularly disposed end portion 4I. A rod 42 is mounted for sliding movement on the arm 38 having an ironing roll 43 journaled in the bifurcated end of the rod, which is spring-pressed against the inner surface of the rotor by a spring 44. The arbor 2| has a bracket 45 hinged on a pivot 46. A stop 4'I on the `bracket limits its counter-clockwise movement produced by the spring 48. A plunger 49 is carried by the bracket 45 having an angularly disposed bifurcated end 5| which supports rolls 52, which engage the element I0 of the rotor on each side of the anges I3. A spring 53 urges the rollers into engagement with the rotor. An additional plunger 54 is carried by the bracket 45 having a bifurcated end 55 which supports an ironing roller 56 for rotational movement. A spring 51 urges the roller into contact with the rotor for the purpose of ironing the metal heated by the electrode 58.' The electrode 58 is mounted for adjustment in a block 59, which is secured to a current conducting shunt 6| and to an insulating plate 62 mounted on the bracket.

An insulated conductor 63 is secured to the end of the arm 38 by a bolt-69 and is supported on the arbor I9 by a bracket 65. An insulating washer 66 insulates the arm I9 from the block 22, and the supporting bolts 61 are insulated from the base of the arbor. A sleeve 68 and a Washer 69 insulate the spring 4'4 and. rod 42 from the arm. Current is delivered to the electrode 58 through the flexible shunt 6| and to the roller 4| through the conductor 63, the roller being maintained directly opposite to the electrode. The rollers 52, on each side of the projecting flanges I3, control the vertical position of the arbors i9 and 2| on the standard 26 as the rotor is driven in rotation by the shaft 29. The electrode 58 and contact roller '4| are maintained in predetermined position relative to each other as the arcuate portions l2 of the rotor and depressed wall portions I4 move thereby.

The electrode is maintained c, predetermined distance from the flanges to produce a Welding operation while the ironing rollers 43 and 56 progressively form the molten metal to illl the recess at the base of the flanges on the interior of the rotor. A smooth continuous surface is formed at the junction between the elements l0 which is substantially non-porous in View of the compacting of the metal produced by the rollers. After the welding operation is completed the bracket 45 may be hinged upwardly and the drum removed from the support and the arm 38, so that a new drum, to be welded, may be inserted thereover.

Accordingly, through the driving of the drum in rotation the mated flanges are progressively welded `and the heated metal compacted and ironed into a smooth surface by adjacently disposed rollers. Continuity of the welding operation is maintained over the portion of the flanges which are deflected from the periphery of the roller by so mounting the external electrode and the internal contact roller as to have them operate in unison following vthe shape of the wall portions. While I have illustrated a pair of hoops as being disposed over the wall so the container by which the container is supportedA and driven, it is to be understood that the Hoops are employed more by way of illustration than by limiting the mounting and driving means to the particular structure illustrated.

While I have described and illustrated but a single embodiment of my invention, it will be apparent to those skilled in the art that various changes, omissions, additions and substitutions may be made. therein without departing from the spiritand scope of my invention, as set forth in the accompanying claims.

What I claim is:

1. A drum formed from a pair of like elements, each of which is pressed from a metal sheet and having frustoconical side wall portions between which portions inwardly formed ribs extend, the small end of one of the elements, being provided with a flanged opening, flanges at the large open end of the elements following the-contour of the rib and conical portions which are abutted and welded to produce a unit construction.

2. A drum formed from a pair of like elements, each of which is pressed from a metal sheet and having frustoconical side Wall portions between which portions inwardly projecting ribs extend to the large open end of the elements, the small end of one of the elements being provided with an opening, a flange about said opening which is rolled back away from the opening, the small end of the other element being deflected inwardly, and flanges .at the large open end of the elements following the contour of the ribs and conical portions which are abutted and welded to produce a unit construction.

ALFRED H. HABERSTUIVIP.

CERTIFICATE 0F CORRECTION. Patent No. 2,55o,u21. september 28, 1915.

AIFRED H. HABERSTUMP.

It is hereby certified that error' appears in the printed specification of the above numbered patent requiring correction as f oilows: Page l, second column, line "I, strike outtne wordthe second occurrence; same line,

.l said Letters Patent should be read with this correction therein that the sane may conforml to 4the record of the casein the patent office.

Signed and sealed this 50th day of November, A. D. 19145.

Y I Henry Van Arsdale, (Seal) Acting Commissioner of Patents.

CERTIFICATE 0F CORRECTION. patent No. 2,55o,LL21. september 28, 19Lp5.

ALFRED R. HABERSTUMP.

It is hereby certified ,that error'sppeare in the printed specification of the above numbered patent requiring correction as follows: Page l, s econd column, line "I, strike outtne woz-dl *the" second occurrence; same line,

lafter "aligned" and before the period insert relation; and that' the said Letters Patent should be read with this correction therein that the sane may conform to Athe record of the casein the patent office.

Signed and sealed this 50th day.of.Novemb`er, A. D. 1914.5.

c I Henry Van Arsdale, (Seal) vActing Commissioner of Patents. 

